Who are basic writers?

I'm not even sure where to start to have an answer for that question.  I think people are basic writers for a myriad of reasons.  Some students were taught poorly, some didn't apply themselves when they were younger, others just don't believe in themselves, or somehow writing has burned them in the past, like a bad relationship they just wanted out of.  Mina Shaughnessy says, "For the (Basic Writing) student, academic writing is a trap, not a way of saying something to someone."  I don't think basic writers have the idea that the language people speak with and the language they write with are the same language. Academic writing is like learning a foreign language to them. Basic writers have a negative connotation attached to academic writing.  In academic writing, the tone and the voice changes, but the basic words remain the same.  

I think there is also an idea that academic writing focuses solely around grammar, spelling, punctuation, surface level things.  Academic writing is focused on the expression of ideas; that's the big picture here.  Basic writers sometimes get so caught up in the little sentence and surface level things, they become frustrated and forget about what they are trying to express in the first place.  They are so busy looking at all the imperfections, they don't see the picture.  An example of this idea is the list of false starts on pages 7 and 8.  By false start 10 the writer is making lots of surface level mistakes and has moved away from the initial point.    

Lastly, and maybe the most important point, basic writers don't control their language, they let their language control them.  Basic writers have either a fear, a hatred, or an ignorance of their language.  They don't know or are unsure how to properly use language, so they avoid it.